Window-sill



F. E. LAWSON.

WINDOW SILL- APPLICATION HLED ma. 7, 1920.

m. W 5, EW-M/ 1 4. W M En d F E m w a UNITED STATES FRANK E. LAVVSON, OF SAN FRANCISCO, CALIFORNIA.

WINDOW-SILL.

Specification of Letters Patent.

` Patented Feb. 15, 1921.

Application filed February 7, 1920. Serial No. 356,912.

To all witam 'it 'may concewn:

Be it known that I, FRANK E. Lawson, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented new and useful Improvements in Window- Sills, of which the following is a specification.

This invention relates to improvements in building construction, particularly to .the window frames of a building and resides in the provision of a window frame constructed so that water which has leaked through the walls of the building and ordinarily collects around the frame or runs out upon the outer side of the wall around the window frame and disfigures the walls, will be collected in the frame and readily drain from the frame at certain points without coming into direct contact with the wall of the building. Thus, I prevent accumulation of water around and the subsequent rotting of the window frame and also prevent Mdiscoloration or disfigurement of the walls around the window frame.

Another object of the invention is to provide for drainage of the wall leakage such as described in the ordinary window frame in a simple and efiicacious maner whereby the 'window frame of my invention may be made simply and inexpensively and without the use of structural parts other than those ordinarily employed, the objects of the invention being obtained through the particular Shaping and forming of such ordinarily used parts.

The invention possesses other advantages and features, some of which, with the foregoing will be set forth at length in the following description where I shall outline,

in full, that form of the invention which I have selected for illustration in the drawings aocompanying and forming a part of the present specification. In said drawings I have shown one form of the construction of my invention but it is to be understood that I do not limit myself to such form, since the invention as expressed in the claims may be embodied in a plurality of forms.

Referring to the drawings:

Figure 1 is a perspective view of the window frame of my invention showing it broken in two and in section in part.

Fig. 2 is a cross sectional view of the lower sill of the frame taken on line 2-2 of Fig. 1.

Fig. 8 is a fragmentary section taken on line 8-3 of Fig. 1.

Fig. 4 is a section taken on line 'al-11 of Fig. 3. v

In the present embodiment of my invention as illustrated in the drawing the window or frame comprises the usual units, a lower sill 1, joined to the top sill or header 2 by the side window'frame portions 3. A casing board 4: having a longitudinal dovetailed groove 5 receiving the dovetailed forward edge of the header 2, is thus supported on the window frame.

In carrying out my invention I provide on the upper side of the upper sill or header 2, a dished out, forwardly inclined drain basin, or trough 7, inclined toward outlets 8 cut through the portion 6 of said header. These outlets communicate with the groove 5 and the lower wall of the groove is provided with drain openings 9 which aline with the outlets 8 and open into the atmosphere along the lower edge of the board 4. As the upper sill projects beyond the wall`10 of the building and the board a is on the outer edge of the sill the water will seep into and collect on the trough 7 and will be discharged through the openings 9 free from contact with the wall 10 and from coming into contact with the interior walls of the building. The lower sill 1 is provided adjacent the ends of the main body thereof with inwardly and forwardly inclined drain basins or tronghs 11, and 12, having discharge openin's 13 at the forward ends of the troughs. Thus, seepage of water from the walls will be conducted into these basins or troughs and drain through the openings 13 at the forward edges of the lower sill so as not to come into contact with the wall of the building. The lower sill projects outwardly usually from the building wall and is provided with end extensions 14 at its forward edge. These extensions, have troughs 15 therein inclined so as to drain into the basins 11 and 12 which will catch the seepage of water adj acent the extensions.

It will thus be seen that I provide for a drainage of wall leakage around the window frame so that discoloration of the interior and exterior sides of the walls and frame and injury due to accumulation of water around the frame are prevented. I

may provide for this drainage by the hol-` lowing out of the basins or troughs and by Vwardly away from the wall of the building.

I may construot a door frame with the troughs and drainopenings after the man-V ner already desoribed so as to prevent injury to the walls around 'the door frames'as well as window frames. i

I claim:--

l. A window frame embodying in its construction an upper sill, and a' casing board secured to the upper sill, said upper sillhaving a drain basin in its upper side and an Outlet for said basin at the forward edge of the sill, said basin inclined toward said Outlet, said board having' a discharge opening thereinvceommunicating with said Outlet.

A window frame including a lower slll an upper slll and a casing board seicured to the upper sill, said upper sill hav- 1 111g a dra-in basin 1n its vupper face and an outletfor said basin, said basin being inolined toward said Outlet, said board having a diseharge opening therein communicating with said Outlet said lower sill having drain troughs in its upper face and discharge lopenings for said troughs formed through forward edge of said sill between the sill and the oasing board.

` FRANK E. LA'WSON. 

